Improvement in lamps



J. S. & T. B. ATTERBURY,

- Lamp. N 0. 102,204.

Patented April- 26, 1870.

dnitrd fiance palm calm.

J. s. ATTERBURY AND T. B. ATTERBURY, or PITTSBURG, PENNSYLVANIA.

Letters Patent No. 102,204, dated 11 ml 26, 1870.

IMPROVEMENT m LAMP-S.

The Schedule referred to in these Letters Patent and making part of the same.

I To all whom ct may concern Be it known that we, J. S. ArrnRnuRrand-fl; B ATTERBURY, of Pittsburg, in the couuty'qggllgheuy and State of Pennsylvania, have invenlidbertaiu new and useful Improvements in Lamps; and we do here .by declare that the following is a full, clear, and exact description of our invention, reference being bad to the accompanying drawings making a part of this specification, in which Figure lis an elevation of a portable stand-lamp, having our improvement applied to it.

Figure 2 is an enlarged sectional view, showing the manner of connecting together the lamp-reservoirand its pedestal or stand.

Figure 3 is a perspective view of thesleeve used to connect the lamp-reservoir to its stand.

Figure 4 shows the upper portion of a lamp-pedestalrhaving parts of screw-threads formed on it.

Similar letters 'of' reference indicate corresponding parts in the several figures. g

The object-of this invention is to improve lamps which are chiefly designed for burning the inflamma ble and explosive hydrocarbon fluids, and which have their-'fluid-reservoirs made of glass or othervitreous substances which possess the capability of bein g molded or blown in the requiredforms.

The invention consists-- Firstly, in forming either knobs, bosses, studs, or seg Iments of spiral screw-threads upon the glass peg of a glass reservoir in the process of manufacturing such reservoir, adapted for receiving oblique grooves which are formed in a metallic socket on the upper end of the pedestal or stand upon which the said reservoir is mounted, and thereby making a rigid and more permauent connection .of the reservoir to its stand than can possibly be effected by the use of cement, as will be hereinafter explained.

Secondly, in forming either knobs, bosses, studs, or

segments of screw-threads upon the upper end of a lamp-pedestal which is made of glass or other vitreous substance, during the process of molding such pedestal, whereby a metal sleeve, having oblique threads formed upon it adapted to receive elevations upon the peg of a glass reservoir, can be secured rigidly to the said pedestal in a'more permanent manner than can T possibly be done by the nseof cement, as will be hereinafter explained. y

We are aware that Roland H. Smith made an applicatiou for Letters Patent, in the year A. D. 1865,

for a mode of mounting aglass lamp-reservoir upon a .pedestal or standard, which mode consisted in forming upon the glass peg of a glass lamp-reservoir acontinucus screw-thread, adapted to screw into a socket formed in the upper end of a metallicor glass pedcstal.

,We are also aware that metallic lamp-reservoirs havebeen connected to their pedestals or stands by screw-fastenings cut on the metal connections.

Yon r petitioners obtained Letters Patent on the day of 1868, for an improved mode of connecting a glass lamp-reservoir to a glass pedestal by forming continuous screw-threadsupon said parts, and using a metallic tube or. socket-piece having cor-,

responding screw-threads formed in it, as the means.

for connecting said parts together. We do not, therefore, claim, under this petition for Letters Patent, the

continuous screw-thread fastenings above referred to.

' To enable others skilled in the art to understandour invent-ion, we will describe its construction and operation.

In the accompanying drawings- A represents the glass fluid-reservoir, of a pedestal or stand lamp; B, the glass pedestal thereof and O, a metallie eonnecting-sleeve or soeket-piece,which receives the peg G in its upper end, and a peg, G, which,

prefer to make the elevations in this manner, although they may be elongated and made somewhat like the segment of a screw-thread.

The upper, end of the pedestal B is terminated by a cylindrical peg, G, a shoulder, b, and upon the circumference of this peg are elevations 'g'g', corresponding in form to the elevations g g upon the peg G of the reservoir A. f

The pedestal 'B, with its shoulder b, peg G, and elevations g'," are produced of glass or other vitreous substance atone operation of blowing or molding.

The metallic tube ,0, which isused as the interme-' diate conecting portion of the lamp-bowl and its pedestal, may be made of sheet metal. It has produced:

in'it, by swaging or otherwise, what might be termed concealed bayonet fastenings, which are adapted for receiving the studs or elevations on the pegs G G, and forming in conjunction therewith interlocking cor:-

nections,.which will firmly hold the two partsA B together. I

Each one of these fastenings consists of a short groove, 0, made in a direction with the length of the tube O, and terminating in an oblique groove, c, thereby forming an obtuse groove.

-The straight portions 0 of the said grooves are ar ranged so that they will receive in them the elevations- '-the hand while the other 'is turned to eflectthe fast prantical mode of carrying it into eflect,

What we claim as new, and desire to secure by Letters Patent, is-

g g on the two glass pegs G G when these pegs are introduced into the ends of the tube 0; then, by giv ing the parts a slight twistabout their. axes, the studs or elevations will be forcibly drawn into the oblique P0330118 c of the grooves and firmly hold the parts to.- ge er.

grooves c '0' onthe upper end of the tube 0 are arranged'in the reverse order to those on the lower end of this tube. This is done inerely to allow thelamp reservoir and the pedestal to be readily secured, together, asabove described, by holding on'efirmly in ening.

Having described our invention, and set forth one tially as and for thepnrp oses described. It will be seen, by reference to figs. 1 and 3, that the 1. A glass lamp-reservoir, having one or more bosses or knobs 9 formed on its glass peg G, substantially as and for the purposes described.

2. A glass lamp-stand or pedestal, B, having one or more bosses or knobs g' formed on its peg G, substan- 3. The parts A and B of a lamp, connected together by means of a metallic tube, 0, having angular grooves c 0' formed in it, and receiving knobs or bosses formed on the pegs G G of said parts A B, substantially as and for the purposes described.

' I J. S. ATTERBU-RY. l T. B. ATTERBURY.

Witnessesz.

A. PATTERSON, J onsjO. Srnvnssos. 

